Soda Fire Ceramics
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I find the recorded synergy between fire and clay to be rich and engaging.
Soda fire ceramics. It was probably discovered by firing sand clay and salt or soda ash. I refer to this as vapor firing. In the soda firing process soda ash sodium carbonate in water solution instead of salt is sprayed into kiln at maturing temperature and sodium vapor combines with silica in clay to form sodium silicate glaze. I am a potter to make bizen.
In this book gail nichols meets the demand for more advanced technical knowledge of materials and processes and more innovative approaches to soda glazing. What you ll find in soda clay and fire chapter 1. Sodium bi carbonate also know as baking soda the arm and hammer kind and sodium carbonate which is also known as soda ash. Oct 6 2019 explore jonathon fosse s board soda fired pottery on pinterest.
Wire clay cutters calipers measuring tools knives saws rasps miscellaneous tools needle tools ribs scrapers sponges wire clay cutters. Soda ash dust is an irritant to the nose throat and lungs. It is important to become familiar with locally available clays and their responses to soda vapor. High fire glazes cone 8 10 elaines celadons laguna spectrum cone 10 oxidation cone 10 reduction 1200 series elaines celadons laguna spectrum.
The soda that we use is. Then colorants were added to make colorful beads and ornaments. Soda firing is an atmospheric firing technique where soda is introduced into the kiln near top temperature 2350 10. I have a soda kiln at my studio and visit local wood fire kilns in the quest to express innate beauty through form and surface.
Kiln firing is done in spring and autumn of the year twice. Both kiln types utilize flames to paint the surface of the pots. Soda gail discusses what soda is how it s introduced into the kiln and what the differences are between salt and soda. Health and safety precautions.
Developing and working with slips is a good place to start with such research. Soda glaze quality is highly reliant on materials used especially clay.